Spark-extinguisher.



G. H EMERSON.

SPARK EXTINGUISHER.

APPLICATION FILED APR. 17, 1915.

Patented Feb. 15, 1916.

2 SHEETSSHEET I- w R M 02 k r: a w r m M M N/77V2'SEJ W{ I W! l 21.01Q21 ml! COLUMBIA PLANOGRAPH c0., WASHMQTQN, D. c.

G. H. EMERSON.

SPARK EXTINGUISHER.

APPLICATION FILED APR-17. 1915.

1,171,934. Patented Feb. 15,1916.

2 SHEETS--SHEET 2- THE COLUMBIA PLANOGRAFH 110., WASHINGTON. 1:. c.

GEORGE E. nivrnnson, or sr'. PAUL, innesota.

SPARK-EXTINGUISHER.

T 0 all whom it may concern:

Be it known that I, GEORGE H." EMERSON, citizen of the United States,resident of St.

Paul, county of Ramsey, State of Minnesota,

have invented certain new and useful Improvements in Spark-Extinguishers, of which the following is a specification.

The object of my invention is to provide an attachment for the smoke boxof a locomotive which will compel the burning embers and cindersdischarged into the smoke box through the fiues to follow a tortuouspath through the smoke box and insure their being extinguished beforeentering the stack.

The invention consists generally in various constructions andcombinations, all as hereinafter described and particularly pointed'outin the claims. i

In the accompanying drawings forming part of thisspecification, Figure 1is a vertical sectional view through a smoke box embodying my invention,Fig. 2 is avertical sectional View in front of the exhaust nozzle onsection line zz,-Fig. 3 is a sectional dead plate and arrangedconcentric with the exhaust nozzle and communicating at its upper endwith the stack 8. In the rear of this. screen 7 I arrange a plate 9,disposed at an incline adjacent to the forward ends of the fines andhaving a backwardly turned upper portion 10 seated upon a'baffie plate 7that is supported at 11 on the flue sheet of the boiler. This plate 9 isprovided with a series of corrugations 12,'extending transversely of thesmokebox, forming teeth 13 against which the burning embers and cin dersare thrown and broken up and disintegrated, and directed downwardlytoward the bottom of the smoke box. Asimilar corrugated plate 14 isadjustably mountedon the forward end of the dead plate beneath thescreen 7 and adjacent to'the nozzle and operates as an apron to checkthe stream of burning cinders and eflect a further breaking up of them,throwing them downwardly Specification of Letters Patent. 1 Pgt ntedFeb15,1916. Application filed April 17, 1915. Serial No. 22,155, V V I 7toward the bottom-of the smokebox. Be neath this plate 1 1 is a plate15, arranged in the lower forward portion of the smoke box and inclinedupwardly and also having teeth formed thereon against which the cindersare thrown, there being a comparatively narrow throat formed betweenthis plate and the plate 14. In front of the smoke box a large toothedplate 16 is arranged vertically, extending entirely across the frontwall and having'its teeth positioned to, en

gage the embers and cinders and crush and break them as: they are thrownforward through the throat between the plates leland 15. A plate 16 ismounted within an opening in the plate 16 through which convenientaccess may be had to the front of the smoke box. At the top of the smokebox is still another plate 17, corresponding substantially.

to the plate 15 but inclined upwardly and backwardly, so that when thecinders come in contact with it they willbe arrested and thrownbackwardly and downwardly against i the wall of the screen 7 and by thesuccessive engagementwith these roughened or toothed plates they will beso thoroughly disinte grated that when they contact with the screen 7they may pass through it, the fire being wholly extinguished, or may.drop' down to the bottom of the smoke box. I am thus able to positivelyprevent the discharge of burning embers or cinders from the locomotivestack. The corrugations may be formed in various ways and the plates inwhichthese corrugations are arr ranged may be varied'in shape, accordingto the desired location of the smoke box,

and in various ways the details OfCOIlStIllC-x tion may be modified andstill scope of my invention. 7

. I claim as my invention:

1.'The combination, with a locomotive smoke box, an exhaust nozzle and ascreen interposed between the nozzle and stack and a dead plate prov dedin the lower portion of said screen, of a roughened plate forming aforwardly and downwardly inclined extension of said dead plate, for thepurpose specified.

be within the; 1

2. The combination, with a locomotive smoke box having an exhaustnozzle, a stack, a SCIQQIIHHZGIDOSQC]. between sa d nozzle and stack,anda dead plate in the lower vportion surfaces arranged upon each sideof said In Witness whereof, I have hereunto set dead plate, one of saidroughened plates exmy hand this 12th day ofApri-l, 1915.

tending upwardly and baekw vardl from v -1 T 7 said dead plate towardthe flue sheel; of the 1 GEORGE IDMERSOB' 5 boiler and the otherroughened plate ex- Witnesses:

tendingrforwardly and downwardly from J. F. PRATT,

the forward portion of said dead plate. HENRY YONG.

Copies of thispatent may be obtained for five cents each, by addressingthe-(lommissioner of Patents,

Washington, D. 6..

